We are running a kind of OLTP system. Currently we are facing the issue in client jboss communication. It takes average 30 ms in just sending a call to Session Bean. We have pooled the remote objects of EJB3 at client end. But still it takes this much time in just sending the request. We are not performing any processing further and just looping back the response to client. We have applied all the slimming and tunnings points described on https://community.jboss.org/wiki/JBoss5xTuningSlimming. Currently we are sending 100 requests per second. Our target is to reach 1000 requests per second that too with application logic. The maximum total response time accepted (with application logic) is 20 ms. We just have one session bean that is all.